Shuttle.



H. LUSSIER.

SHUTTLE.

APPLICATION FILED' FEB. 5, I9Ie.

1,226,61 5. Patented May 15, 1917 interno HENRY Luserna, or 'sami/i, MASSACHUSETTS, essonon; nr eseenxtfnnee, we nimeer: oonronn'rren', on nornoetie, eriteenonnsnrre, A, oonrone'rmn on AENE.

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Specification of Letters Patent.

indented il' .ay i5, lt?.

Application filed l'etruery 5, i916. Serial No. WSJRSS.

i/b nl! ell/fiom z' may; eminem.'

lie it ln'iown that l, llnn'nr linssnin, a citizen of the United State .siding at Salem, county of Essex, and St( et lrlassaelinsetts, here invented an linprfn'einent in Shuttles, of Whicli the following` description, in een.-A nection with the accdrnpanying drnvings,

A is a specification, like lette-rs on the drawings representing lilre parte.

'.lhe invention to be hereinafter described relates-to loom shuttles, and more particu p larly-to loom shuttles empl yed in looms of the illingreplenishing type.

ln filling repleniehing loonis )vhere the filling carrier or bobbin is ejected, from 't ie'A shuttle and another carrier or bohbin withl a lresh supply et ill'mg is substituted in the shuttle. Those devices have been yari# ionsly formed and are generally known as threading blocks and the shuttles themselves are usually designated self-thread ing shuttles.

The threeding blocks o1, such shuttles usually have :tl longitudinal threadpaseageand :i projection er beak, so formed that when the shuttle makes its rst pick after re-..

plenishnient, and the filling is drawn from the filling carrier byI reason ol the lillinp:

end being fastened to a fixed part, the filling ordinarily passes into the thread passage and beneath the beak, and the preliminary step in. the threading operation is aocoinplished. 0n the return or 'next pick of the shuttle in the oposite direction, the filling vvis ordinarily gui .ed into the delivery eye of the shuttle, and the threading operation is completed.

It happens at times that the filling :tails to find its Way under the beak of the threading block on the 'first pick of the shuttle after replenishment, so that on the return or next pick of the shuttle the fillingr will lead back-- Ward to the cloth selvage directly from the end of the hobhin in which position, as well gage its return or second piek, and This mishap is technically known in the as a;

real miethread.

An important feature of the present inijention consists of means 'for preventing f real misthrends l by providingr threading block with leaders, one, net least, of wl'iiol'i is so related .to the tliread passage that Should the illing fail to he prelirni` narily threaded on the lirst 'pic-lr oi' the shuttle after replenishment, that it Will enthe illing;u on the return or second piek oit' the' shuttle and cause it to be drawn forward-from the end or the hobbin as the shuttle paesos tlirough the shed. Another important feature of the invention consiste in projecting a lender from one Wall. portion of the thread passage to underlie en over- Ahanging portion oit the opposite Well, so

that should the lilling not he caught and pre liniinarily threaded by the beak, the hight of Filling formed as the shuttle maken its return or second pick will be prevented from moving lngitndinally beck from ont ol the thread passagetoward the bobbin but will be engaged by such leader about which it will be. d own longitudinally from the bobbin as the shuttle passes through the shed on its seeond pick.

The above and other fieatnres of the invention will he hereinafter described and then definitely eet forth in the claims.

ln the drawings r-l `IFigure is a plan View of a shuttle pro vided with one vforno of the present invention, part thereof being broken away;

Fig. 2 is a perspective View of the eye end of the shuttle, showing the threading block and the filling, engaged by a leader;

Fig. 3 is a detached View of the threading, block having 'a portion of one Wall broken away; and l Fig. A is an end View of the threading block looking fromthe left, Fig. 1.

The shuttle body 1 is provided with the usual chamber 2 open atthe top and bottom for the-reception of alllling carrier or bolibin Il having a supply of lilling 4 thereon. The filling carrier or 'bobbinA 3 may be conveniently supported in the shuttle'by any appropriate means and is herein'shown as provided With a series. of hobbinI-holding lili' rings 5 adapted to engage the bobbin-holding jaws 6 secured to the shuttle. These parts may be of usuall and well understood construction.

The eye end of the shuttle is provided illustrated form of the invention the threadv passage l2 is of generally circular form in cross section as illustrated in Figs. 3 and 4, and has a contracted passage 13 leading thereinto. Above the contracted passage 13 is a vestibule or longitudinal opening 14 into which the thread may be first delivered as the shuttle makes its first pick after replen ishrnent. TWhile these details of construction have been found in practice to be a good, practical form of the longitudinal thread passage, it is to be understood that the invention is not restricted thereto, but such thread passage may be otherwise formed, the essential in this res ect being that the threading block be provided at its lower portion extending longitudinally thereof with a suitable. passageway for the filling leading from the filling carrier or hobbin in the shuttle. The top portion 15 of the side wall 10 of the threading block is substantially of triangular form and downwardly curved to the contour of the top and side portions of' the shuttle wood, substantially as indicated in Figs. 1 and 2, the construction beino such that this portion of the threading 1lfiloek shall find a proper seat in the cavity of the shuttle wood and offer a continuous unobstructed surface over which the fillingv may readily pass. The forward top portion of the part 15 of the `threading block has a lateral projection which forms a beak 16, the top surface portion of the beak at 1'? being curved to direct the Vthread lying on the beak down-A wardly into the thread passage.

The opposite side wall portion 11 of the threading block is extended forwardly as indicated in Figs. 1 and 9., to form a guard 18 orerhanging the beak 16, the construction being auch that should thc thread be laid longitudinallv of the threading block as the shuttle makes its first pick after re plenishment, it will be guided by the top surface of the guard 1S and forwardlyextending` portion of the surface 1li downwardly oie-3o the beak 16 and then be by the beak three-.ed to a position thereunder so that the filling on the first pick of the shut- Aparte thusfar described may be varied in vbelow the guard 18. and the beak- 16 when tle, will be preliminarily threaded. The guard, 18 may be conveniently provided with a diagonal directing edge portion 19 to facilitate the preliminary threading operation of the filling.

` Extending downwardly from the base portion of the beak 16 is a guiding surface 20, usually denominated a horn the con-- struction being such that after the shuttle has been preliminarily threaded on the first pick ofthe shuttle after replenishment, that is, has been positioned in the thread passage and below the beak, it will, on the return or next pick of the shuttle, be guidedfby the horn downwardly and between the forward edge of the surface 15 of the threading block, and the wood of the shuttle, into the thread eye 8, from which it will be delivered during the weaving operation. The

form, suited to the intended purpose. In

the present instance, the parts thus far described may be substantially the same as the similar parts in thev Northrop Patent No. 7 69,914, dated September 13, 1904.

e' It will happen at times after a replenishing operation, that the filling leading from the filling carrier in the shuttle will fail to be preliminarily threaded, or pass the shuttle makes its first pick, so that on the return or second pick of the shuttle, instead of being-guided by the horn QOdownwardly into the delivery eye 8, the filling will leave the thread passage and draw di- 10o rectly back from the end of the bobbin in the shuttle, with the result that the filling will be broken as the shuttle returns or makes its second pick. Various causes may contribute to this defective action in the threading operation, such as lint accumulation, the air currents incident to the weaving operation, etc., but usually the cause for such real-misthread is temporary, and if breakage of the filling can be prevented on 11o the return or second pick of the shuttle, it will, under ordinary conditions, be prelimi narily threaded or find its way below the beak 16 on the third pick of the shuttle and then on the fourth pick be directed to the delivery eye. y The present invention, therefore, contemplates the provision of fixed leaders so associated with the. opposed portions of the threading block that should the filling fail to be preliminarily threaded on the first pick after replenishment, it will be engaged by one of the leaders on the second or return pick of the shuttle, and continue to be drawn longitudinally Jfrom the end of the filling carrier or hobbin in the shuttle when the shuttle makes its second or return pick. Above the longitudinalthread passage in the threading block is a thread entrance 21 through which the filling may pass to the longitudinal thread passage as the shuttle makes its first pick after replenishment, and extending transversely above the longitudinal thread passage is a leader 22 formed Vas a shouldered portion, substantially as indicated in the Northrop patent hereinbefore mentioned.

Back of the leader 22, that is, in position between the leader 22 and the end of' the bobbin, is another leader 23 which, for identification herein, may be designated the rear leader, with reference to the leader 22. The leader 23 is preferably formed in the top portion l5 of the side wall l0 by slotting such side wall as at 2l, and the end portion 25 of the rear leader extends transversely of' the thread entrance to underlie an overhanging portion 2G of the opposite wall 1l of the threading block, the construction being such that should the filling fail to be preliminarily threaded on the first pick of the shuttle after replenishment, and on the return or second pick of' the shuttle the bight of filling fail to be engaged by the front leader 22, it Will unerringly be engaged by the rear leader 23 because the end 25 of said leader extends across the thread entrance as indicated in Fig. 1, and closes the entrance of the thread passage to movement of the bight offilling past the leader 23 vand the parts take position substantially as indicated in Fig. 2.

As will be noted from viewing Figs. 3 and 4, the top surface of the part l5 of the threading block is inclined downwardly toward the thread passage and so, also, is

the top 27 of the oppositewvall, but in the present instance of the invention the end 25` of the rear leader extends beneath the inner edge portion of the opposite wall sufficiently to insure that the filling cannot be drawn backward toward the bobbin without positive engagement by the rear leader 23 which thereupon takes control of the filling and causes it in the sub-- sequent movement,v of the shuttle, to be drawn longitudinally from the land of' the filling carrier 'or bobbin contained therein, thus avoiding a real-misthread or breakage of the filling .on the return or.V second pick of the shuttle after a replenishing operation. It may not be necessary in all cases to employ the front leader v22, because the rear leader 23 effectively acts to prevent a realinisthread, and in many cases it alone is sufficient for this purpose.

The threading block is provided at its lower portion with the stud v28 which may engage an appropriate recess in the shuttleV wood, and in` connection with a retaining bolt 29 passed through an opening 30 of the vthreading block, serves to effectively hold the threading block in operative position.

1What is claimed is l.4 A loom shuttle adapted to contain a supply'of filling and having a delivery eye, a: threading block having a longitudinal thread passage and an ent-rance thereto, a frontleader and a lrear leader extending from a sidewall of the'threading block over the thread passage and disposed at different points longitudinally of the thread passage,`and a guard overlying the end of one of' said leaders to prevent av bight of filling being drawn past the underlying leader on the second pick of the shuttle when the latter has failed to be preliminarily threaded after replenishment.

2. A shuttle provided with a threading block having a longitudinal thread passage, two leaders exrtending from one side wall of the threading block above the thread passage and at different distances from the end of' the shuttle, one of said leaders eX- tending farther from the side wall than the other.

3. A shuttle provided with a threading" block having a longitudinal thread passage, a front leader extending' from one side wall of the block above the thread passage to engage the filling should the shuttle fail to be threaded on the second pick following replenishment, and a rear .leader extending Jfrom a side wall to a greater distance than the other leader to catch the filling when it fails to be held by the front leader.

..A shuttle provided with a threading block having a longitudinal thread passage, a front leader extending from one side Wall of the block above the thread passage to catch the filling when it fails to be threaded on the second pick foliowing replenishment, a rear leader extending from a side wall to a. greater distance than the other leader, and a guard overhanging the end ot' the rear leader to catch the Elling when it fails to be held by the front leader.

5. A shuttle havinga threading block` naine.

` HENRY LUSSIER. 

